Once you change the address you have to fill up form AR11
Also to inform the service center where your I-485 is filed, after you send the letter for address change they take long time to update the address and may Not update and may be sending all the documents to address you provided on I-485. If I am in your position I will delay the filing of I-485, EAD, AP till the time I don’t relocate and inform the new address to lawyer or on I-485, EAD, AP forms.